BZX84C12LT1G
onsemi
Needs validationmedium risk
A functional alternative in the same package but with a lower 12V Zener voltage.
Best Alternatives to BZX84C16LT1G
BZX84C16LT1G is a 16V, 250mW Zener diode in a SOT-23 package from onsemi. While no exact pin-compatible replacements have been identified, several functional alternatives from the same BZX84C series with different voltage ratings are available for consideration.
AI replacement insight
Electrical riskhigh
All candidates have a different Zener voltage, which is a critical parameter.
Package risklow
All candidates share the same SOT-23 package and are assumed to be pin-compatible.
Can it be replaced directly?
No direct, pin-for-pin replacement for the BZX84C16LT1G has been verified. Alternatives require careful review of the Zener voltage.
Best replacement path
The best path is to select another Zener diode from the onsemi BZX84C series, such as BZX84C12LT1G (12V) or BZX84C18LT1G (18V), and verify if the voltage difference is acceptable for the application.
Main risk
The primary risk is Zener voltage mismatch, which will alter the circuit's voltage regulation point and could lead to malfunction or damage.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | BZX84C16LT1G | BZX84C12LT1G | BZX84C18LT1G | BZX84B3V3LT1G | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-23 (TO-236) | SOT-23 (TO-236) | SOT-23 | SOT-23 (TO-236) | SOT-23 (TO-236) — Package matches.; BZX84C18LT1G: Package matches.; BZX84B3V3LT1G: Package matches.; BZX84C33LT1G: Package matches. |
| Pinout | 3 | 3 | 3 | 3 | 3 — Pin count matches.; BZX84C18LT1G: Pin count matches.; BZX84B3V3LT1G: Pin count matches.; BZX84C33LT1G: Pin count matches. |
| Voltage | 16.0V | 12.0V | 18.0V | 3.3V | 12.0V / 18.0V / 3.3V / 33.0V — Lower Zener voltage.; BZX84C18LT1G: Higher Zener voltage.; BZX84B3V3LT1G: Significantly lower Zener voltage.; BZX84C33LT1G: Significantly higher Zener voltage. |
| Power | 250mW | 250mW | 250mW | 250mW | 250mW / 225mW — Power rating matches.; BZX84C18LT1G: Power rating matches.; BZX84B3V3LT1G: Power rating matches.; BZX84C33LT1G: Slightly lower power rating. |
Application & sourcing insights
Questions & answers
The best alternative depends on your circuit's voltage tolerance. Parts from the same onsemi BZX84C series, like BZX84C18LT1G (18V) or BZX84C12LT1G (12V), are form-fit compatible but have different Zener voltages that must be evaluated.